package com.itheima.reggie.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理
 */
//@RestControllerAdvice
@ControllerAdvice(annotations = {RestControllerAdvice.class, Controller.class})
@ResponseBody
@Slf4j
public class GlobalExceptionHandler {
    /**
     * 进行异常处理， 是添加用户的username重复
     * @return
     */
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.error(ex.getMessage()); //获取异常信息
        if(ex.getMessage().contains("Duplicate entry")){  //Duplicate entry 'zhangsan' for key 'idx_username'
            String[] split = ex.getMessage().split(" ");
            String msg = split[2] + "已存在";
            return R.error(msg);
        }
        return R.error("未知错误");
    }

    /**
     * 自定义异常处理。
     * @param ex
     * @return
     */
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex){
        log.error(ex.getMessage()); //获取异常信息
        return R.error(ex.getMessage());
    }



}
